Individual holder
PORTNOY HAROLD D
2 granted patents·1 pending application·262 citations·filing 1975–2005
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0192US4867741APhysiological draining system with differential pressure and compensating valvesPORTNOY HAROLD D·Filed 1983·Granted Sep 19, 1989·208 cites·17 claims
- 0254US3991768AShunt system resistant to overdrainage and siphoning and valve thereforPORTNOY HAROLD D·Filed 1975·Granted Nov 16, 1976·54 cites·12 claims
- 0337US2006089589A1Resistive shunt valvePORTNOY HAROLD D·Filed 2005·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →